looking for a short story! iirc, a girl meets her destined soulmate (red string, maybe, i forget), but is ultimately persuaded to give up by that soulmate's girlfriend...
Not exactly as you described but first one that came to mind is this one, maybe?
looking for a short story! iirc, a girl meets her destined soulmate (red string, maybe, i forget), but is ultimately persuaded to give up by that soulmate's girlfriend...